import { asyncRoutes, constantRoutes } from '@/router'

/**
 * Use meta.role to determine if the current user has permission
 * @param roles
 * @param route
 */
// function hasPermission(roles, route) {
//   if (route.meta && route.meta.roles) {
//     return roles.some(role => route.meta.roles.includes(role))
//   } else {
//     return true
//   }
// }
function hasPermission(menus, route) {
  if (route.authority) {
    if (menus[route.authority] !== undefined) {
      return menus[route.authority]
    } else {
      return false
    }
  } else {
    return true
  }
}

/**
 * Filter asynchronous routing tables by recursion
 * @param routes asyncRoutes
 * @param roles
 */
// export function filterAsyncRoutes(routes, roles) {
//   const res = []

//   routes.forEach(route => {
//     const tmp = { ...route }
//     if (hasPermission(roles, tmp)) {
//       if (tmp.children) {
//         tmp.children = filterAsyncRoutes(tmp.children, roles)
//       }
//       res.push(tmp)
//     }
//   })

//   return res
// }
function filterAsyncRoutes(asyncRouterMap, menus) {
  const accessedRouters = asyncRouterMap.filter(route => {
    if (hasPermission(menus, route)) {
      if (route.children && route.children.length) {
        route.children = filterAsyncRoutes(route.children, menus)
      }
      return true
    }
    return false
  })
  return accessedRouters
}

const state = {
  routes: constantRoutes,
  addRoutes: []
}

const mutations = {
  SET_ROUTES: (state, routes) => {
    state.addRoutes = routes
    state.routes = constantRoutes.concat(routes)
  }
}

const actions = {
  generateRoutes({ commit }, menus) {
    return new Promise(resolve => {
      const accessedRoutes = filterAsyncRoutes(asyncRoutes, menus)
      commit('SET_ROUTES', accessedRoutes)
      resolve(accessedRoutes)
    })
  }
}

export default {
  namespaced: true,
  state,
  mutations,
  actions
}
